19940396 has 12 divisors (see below), whose sum is σ = 39880848. Its totient is φ = 8545872.

The previous prime is 19940383. The next prime is 19940411. The reversal of 19940396 is 69304991.

19940396 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356051 + ... + 356106.

It is an arithmetic number, because the mean of its divisors is an integer number (3323404).

Almost surely, 2^19940396 is an apocalyptic number.

It is an amenable number.

19940396 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19940396 is a wasteful number, since it uses less digits than its factorization.

19940396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712168 (or 712166 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 19940396 is about 4465.4670528400. The cubic root of 19940396 is about 271.1718430985.

The spelling of 19940396 in words is "nineteen million, nine hundred forty thousand, three hundred ninety-six".